Antitrust Clearance for Adams Acquisition

January 8, 2008

                 RECKITT BENCKISER RECEIVES HART-SCOTT-RODINO                  
                    ANTITRUST CLEARANCE FOR ACQUISITION OF                     
                        ADAMS RESPIRATORY THERAPEUTICS                         

Reckitt Benckiser Group plc (RB.L) ("Reckitt Benckiser") and Adams Respiratory
Therapeutics, Inc. (NASDAQ: ARxT) ("Adams") announced today that they have
received early termination of the waiting period under the Hart-Scott-Rodino
Antitrust Improvements Act of 1976 (HSR) relating to the previously announced
tender offer to purchase all of the outstanding shares of common stock of
Adams.

Reckitt Benckiser initiated, through its wholly owned subsidiary Twickenham
Inc., a cash tender offer on December 21, 2007, to purchase all outstanding
shares of common stock of Adams for US$60.00 per share.

The tender offer will expire at 12:00 midnight, New York City time, on January
23, 2008, unless extended in accordance with the Merger Agreement entered into
between Reckitt Benckiser, Twickenham and Adams and the applicable rules and
regulations of the U.S. Securities and Exchange Commission (SEC). The offer
remains subject to other customary conditions, including the acquisition by
Twickenham of a majority of Adams' shares of common stock on a fully diluted
basis.

For Further Information

Reckitt Benckiser                                        [phone]  
                                                                               
Mark Wilson               Corporate Controller and Investor Relations Manager  
                          (investor queries)                                   
                                                                               
Fiona Fong                Head of Corporate Communications (press queries)     
                                                                               
PR Agency                                                                      
                                                                               
Susan Gilchrist           Brunswick                      [phone]  
                                                                               
Cindy Leggett Flynn       Brunswick New York             [phone]       
                                                                               
Adams Respiratory                                                              
Therapeutics                                                                   
                                                                               
Janet M. Barth            SVP Investor Relations &       [phone]       
                          Corporate Communications                             
                                                                               
Faith Pomeroy-Ward        Sr. Manager Investor Relations [phone]       
                          & Corporate Communications                           

Important Information

This announcement is neither an offer to purchase nor a solicitation of an
offer to sell securities. The tender offer is being made pursuant to a tender
offer statement filed with the SEC on Schedule TO (including an offer to
purchase, a related letter of transmittal and other offer documents) and the
related solicitation/recommendation statement filed with the SEC on
Schedule 14D-9, which contain important information that should be read
carefully before any decision is made with respect to the tender offer. Those
materials (and all other offer documents filed with the SEC) are available at
no charge on the SEC's Web site: www.sec.gov.

Notes for Editors

Reckitt Benckiser is a world leader in household cleaning, health and personal
care. The Company is truly global, with over 60 operating companies and some 43
manufacturing facilities worldwide and has sales in 180 countries. Reckitt
Benckiser employs 22,000 people around the world. Amongst the Company's leading
brands in household are Lysol, the world leader in disinfecting cleaning,
Calgonit & Finish & Electrasol, the world leaders in automatic dishwashing,
Woolite, world leader in fine fabrics, Vanish & Spray'nWash, world leaders in
fabric treatment, Airwick and Mortein, both No.2 brands in air care and pest
control respectively. In Health & Personal Care (25% of net revenues), leading
brand positions include Veet, the world number one depilatory and Dettol the
world's leading antiseptic, Nurofen, the leading European analgesic, Strepsils,
world number one in medicated sore throat, Gaviscon the No.1 gastro intestinal
remedy in UK and Lemsip the UK no.1. in cold/flu remedies.

Reckitt Benckiser is headquartered in Slough just outside London, UK and is
listed on the London stock exchange. With a market capitalization of c.£20bn it
ranks among the top 25 UK listed companies. Reckitt Benckiser had net revenues
of £4.92bn, operating profit of £910m, and net income of £674m in 2006.

About Adams Respiratory Therapeutics, Inc.

Adams is a specialty pharmaceutical company focused on the late-stage
development, commercialization and marketing of over-the-counter and
prescription pharmaceuticals for the treatment of respiratory disorders.